Police arrived and found Bonaparte bleeding to death on the street outside his three-story home. Brown was dead inside, cops said.

Their daughter and granddaughter ran from the house, past the carnage, police said. Medics rushed Bonaparte to Kings County Hospital, where he died just after 7 p.m., authorities said.

Cops are looking into the possibility that the bloodshed was the result of a robbery gone wrong.

“They had a store, a small business. Someone must have been monitoring them,” said next-door neighbor Berlium Stuart, 39. “They went to work and they came home. It’s really sad. They were really good people.”